new research suggests that vaccinating every child for the chicken pox is actually increasing the number of occurences of herpes zoster infection (shingles)?
eLifeAn individual-based model estimates exogenous boosting of immunity following re-exposure to chickenpox is limited to 2 years after re-exposure, but an increase in herpes zoster incidence is still expected to occur following universal varicella vaccination.
https://elifesciences.org/articles/07116